48results about How to "Benign environmental effect" patented technology

The invention discloses a device for ecologically culturing seashell and alga in shallow sea and a method thereof. The device comprises a seashell culture raft and an alga culture raft. The seashell culture raft comprises at least two paralleled floating ropes; buoys are arranged on the floating ropes and are connected with the floating ropes through floating ties; the two ends of each floating rope are fixed by underwater fixing mechanisms; the alga culture raft made by at least one culture curtain is arranged above each two adjacent floating ropes; the adjacent culture curtains are fixed byfloating bamboo perpendicular to the floating ropes; and the two ends of the floating bamboo are connected with the floating ties. The device can be used to carry out the hanging culture of the seashell on the floating ropes and carry out the culture of the alga in the culture curtains floating above the floating ropes, thereby realizing the composite culture of the seashell and the alga. The device and the method have the advantages of reducing the culture cost, improving the culture efficiency and culture space utilization factor, and having good effects on the comprehensive use of shallow sea waters, the improvement of the water environment and the prevention and control of diseases.

The invention discloses composite fertilizer containing magnesium ammonium phosphate and polyglutamic acid, wherein the weight ratio of the polyglutamic acid to the magnesium ammonium phosphate is 1 to 100-10000, preferably 1 to 200-800. The experimental result indicates that the composite fertilizer provided by the invention can regulate the growth of crops well, improve disease resistance and stress resistance, promote the healthy effect of the crops and increase the yield of the crops.

The invention discloses a breakwater capable of generating electricity by using waves. The upstream side of the cylindrical breakwater is provided with a water accumulating structure; the water accumulating structure comprises two side walls fixedly connected with the cylindrical breakwater; the bottoms of the two side walls are fixedly connected with a reinforced concrete cover plate; the two side walls are provided with inclined upstream fixed front baffle plates; the bottoms of the fixed front baffle plates are fixedly connected with the reinforced concrete cover plate; the reinforced concrete cover plate, the two side walls, the cylindrical breakwater and the fixed front baffle plates form a water accumulating pond with a water accumulating structure; a support frame of the water accumulating structure is arranged in the water accumulating pond; the bottom of the cylindrical breakwater is provided with a drainage flow channel communicated with the water accumulating pond; the drainage flow channel is communicated with the cylindrical breakwater; and a hydraulic power generation unit is arranged in the drainage flow channel. The breakwater capable of generating electricity by using waves has a wave-preventing function, is provided with a wave power generation device, has structural stability and high energy conversion efficiency, and realizes structural optimization.

The invention discloses a method for treating coking waste water after ammonia removal, which comprises the following steps: regulating the pH of the coking waste water after ammonia removal to 4-6; introducing the waste water into a safety filter and intercepting suspended materials in the water; adding hydrogen peroxide into the waste water and generating catalytic oxidation in the presence of a surface catalyzing agent for the reaction time of 1.5-2.5h; ntroducing the waste water into a biochemical distributing reservoir and regulating the pH to 7.5-8; pumping the waste water into a biochemical system for degrading organic pollutants in the waste water and removing total nitrogen pollutants in the waste water for the dwell time of 18-30 hours; introducing the mixed fluid of the waste water and sludge together into a secondary settling tank; discharging a supernatant reaching a standard; and transporting the sludge out for treatment. The method of the invention is carried out at normal temperature and pressure, and has mild reaction condition, high degree of automation, simple operation and small equipment investment, and the effluent water after biochemical treatment can completely reach the standard and be discharged, thereby reducing the pollutant to a low level, greatly reducing the chroma and having good environmental effect.

The invention discloses an aqueous double-component polyurethane varnish and a preparation method of the aqueous double-component polyurethane varnish. The raw material formula of the aqueous double-component polyurethane varnish is composed of a component 1 and a component 2, wherein the component 1 comprises the following components: 55-65% of hydroxy polyurethane dispersion, 15-18% of water, 0.2-0.5% of acetobutyryl cellulose flatting agent, 0.5-0.8% of flowing deformation auxiliary agent, 0.5-0.8% of nano silica particle, 0.1-0.3% of defoamer, 0.3-0.5% of defoaming agent, 0.1-0.3% of thickener, 0.4-0.6% of film-forming auxiliary agent, 0.2-0.5% of aqueous drier and 0.5-1.5% of teflon wax; and the component 2 comprises 15-20% of polyisocyanate and 1-3% of degassing solvent. The aqueous double-component polyurethane varnish has the characteristics of fast drying speed and good leveling property, is not easy to generate bubbles, is easy to store, and can endow a varnish film with high hardness and high anti-scratching property.